Meter-testing cut-out.



A V. A. MOHARG.

METER TESTING GUT-OUT.

APPLICATION f ILBD MAY 31, 1912.

1,052,608. Patented Feb. 11, 1913.

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METER TESTING oUT-oUT. 1

APPLICATION FILED MAY 31, 1912.

1,052,608. Patented Feb.11,1913.

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A. V. A. MCHARG.

METER TESTING GUT-OUT.

y APPLICATION FILED MAY 31, 1912. 1,052,608, Patented Feb. 11, 1913.

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ARTHUR V. A.44 MQHARG, OF .NEW YORK, N.. Y.

METER-TESTING CUT-OUT.

Specication of Letters Patent.

Patented Feb. 11, 1913.

Application led May 3l, 1912. Serial No. I700,565.

To all whomc' may concern.'

Be it known that'I, ARTHUR V. A. MC- HA-no, a citizen of the United States, residing at New York, `in the county of New York and State of New York, have invented a certain new and useful Improvement in Meter-Testing Cut-Outs, of which the following is a specification.

The invention relates to a meter testing cut-out, and hconsists in the construction, hereinafter set forth, whereby -a switch gang lever on the base, when placed in one position, establishes direct circuit Jfrom service leads to load, and when placed in another position, establishes circuit from service leads to load through the meter. l/Vhen the lever is in the first-,named position, a gang plug, to which testing instruments ar-e connected, cooperates withl suitable .contacts on the base and with one of the lever arms to establish circuit through the meter and said testing instruments. By this means, 4the meter can be tested without interrupt-ing current supply from the service leads to the load. j

In the accompanying drawings-Figure 1 is a plan view `of my meter testing cut-out., sho-wing the gang switch lever AA in running position to close circuit to meter. Fig. 2 is a` section on line of Fig. A1. Fig. 3 is a section on linel a, a of Fig. 1. Fig. 4 is a section, similar to Fig. 2, with the gang' switch lever A in position to cut out the meter, and the m-eter testing gang pluginplace. Fig. 5 is a section on line y, ,1/ of Fig. 2. Fig. 6 is a side elevation, and Fig. 7 is an end elevation of the gang plug. 8 is a plan view of the gang plug, showing the connections for t-he test-ing instruments. Fig. 9 is a diagram, showing the circuits when the switch is in running position (Fig. 1), and Fig. 10 is a diagram, showing the circuits when the switch is swung to cut out `the meter, and when the testing gang plug is in place. y l Similar letters and numbers of reference indicate like parts.

1 is the base block of insulating refractory material, such as porcelain, having `five longitudinal channels. On the bottom"l of the middle channel is a met-al bar 2.- To one end 3 of said bar the neutra-l lead of a three@` wire system is connected. To the other end 4 is connected the meter potential coil 5. On the bottoms of the other channels are four metal barsd 6, 7, 8, 9. One meter ield coil 12 is connected to the ends 10, 11 of bars 6, 7. The other meter lield coil 15. is connected to the ends 13, 14 of bars 8, 9. Also in saitl cha-nnels are four other metal bars 16, 17, 18, 19, separated from the bars 6, 7, 8, 9. The positive-service and load leads are connected at 20, 21^to bars 16, 17. The negative service and load leads are connected at 22, 23 to bars 18, 19.

On bars 16, 17, 18, 19 are four pairs of upwardly extending plates 24, 25, 26, 27. Between the members of .each pair are pivoted the four arms 28 of the gang switch lever A. lEach of said arms is appro-Ximately triangular in shape, as bestshown in Figs. 2 and 4. A headed rod 29 which extends through said arms, is insulated, therefrom by bushings 30, Fig. 2, and is secured by a nut on its end. Insulating sleeves 31 are carried by said rod and are interposed between the arms 28, and between the outer arms and the nut and head on said rod. The rod and sleeves form an opera-ting handle for the gang switch lever A. On the bars 6, 7, 8,9 are four upwardly extending pairs of contact plates 32, 33, 35, 36. l/Vhen the switch lever A is swung on its pivots into thepositio-n shown 'in Figs. 1, 2, and 5, its arms 28 enter between the pairs 32, 33, 35 and 36.

On top of two of the longitudinal partitions in the base are secured bridge plates 37, 38. Integral with plate 37, Fig. 3, and

depending into the adjacent channels are two pairs of contact plates 39, 40. Integral with plate 38 and depending into the adjacent channels are two pairs of contact plates 41, 42. When the switch lever A is swung into the position shown in Fig.v 4, its arms 28 enter between the members ot' said pairs of co-ntact plates 39, 40, 41 and 42.

The meter test-ing gang plug,`Figs. 6, 7,

8, comprises a bar 43 of insulating material, which is received in tive U-shaped metal plates 44, 45, 46, 47, 48, integral with which shown in Figs. 4 and 10, and the gang plug 43 is put in position. The plates 49, 50, 51, 52, 53 of said plug then enter the pairs of contacts 32, 33, 34, 35, 36, and the clip 54 is placed on the end arm 28 lof lever A, as best shwn in F ig. 4. The clip 55 is then idle. If the plug were reversed end for end, the clip would be lapplied to the opposite end arm of lever A, and the clip 54 would be' idle. T he purpose ofthe two clips 54, 55 is, therefore, simply to permit the plug to be applied to either of the end arms of lever A. Circuit is then closed directly to load from the positive service lead, to bar 16, switch lever arm 28, contacts 39, plate 37, contacts 40, switch lever arm 28, bar 17, and positive load lead. Circuit from negative service lead to negative load lead proceeds in like manner. rllhe meter test circuit proceeds from lever arm 28, tov clip 55 on plug 43, to plate 48, contact 53, contacts 32, bar 6, eld coil 12, bar 7, contacts 33, contact 52, through the ammeter and artificial load to contact 50, contact 35, bar 8, field coil 15, bar 9, contact 36, contact 49, strip 56, contact- 51, contact 34, bar 2 and neutral. rfhe voltmeter then becomes connected from contact 32 to contact 34.

l claim:

1. A meter testing cut-out, comprising a base', service, load and meter circuit terminals thereon, and a gang switch lever on said base and coperating when in one position with said service and load terminals to establish direct circuit from service to load, and coperating when in another position with said service, load and meter terminals to establish circuit from service through the meter to load; the said circuit to load being constantly maintained.

2. A meter testing cut-out, comprising a base, service, load and meter circuit termi-V nals thereon, a gang switch lever on said base and coperating when in one position with said service and load terminals to establish direct circuit from service to load, and coperating when in another position with said service, load and meter terminals to establish circuit from service through the meterto load, a gang plug having contacts coperating with said switch lever and with said meter terminals, and meter testing apparatus connected to said plug contacts; the said circuit to load being constantly maintained.

3. A meter testing cut-out, comprising a base, service and load terminals thereon, a gang switch on said base having four mutually insulated arms respectively connected to said terminals, two pairs of fixed contacts, and bridges connecting the members of said pairs: the said switch arms coperating with said fixed contacts and bridges to establish direct circuit from said service terminals to said load terminals.

4. A metertesting cut-out, comprising a base, service, load and meter terminals thereon, a gang switch lever having four mutually insulated arms connected to said service and load terminals, two pairs of fiXed contacts, bridges connecting the members of said pairs, and four fixed contacts connected to said meter terminals: the said switch arms when in one position coperating with said first-named fixed contacts and bridges to establish circuit directly from said service terminals to said load terminals, and when in another position coperating with said last-named fixed contacts to establish circuit between said service terminals, meter terminals and load terminals.

'5. A meter testing cut-out, comprising a base, service, load and meter terminals thereon, a gang switch lever having four mutually -insulated arms connected to said service and load terminals, two pairs of fixed contacts, bridges connecting the members of said pairs, and four fixed contacts connected to said meter terminals: the said switch arms when in one position coperating with said first-named fixed contacts and bridges to establish circuit directly from said service terminals to said load terminals, and when .in another position coperating with said 

